Improved composition of matter



UNIT D STATES PATENT OFFICE.

sTUAnT GWYNN, on NEW YORK, N. Y., ASSIGNOR o AMERIoAN METALINE' COMPANY, OF SAME PLACE.

IMPROVED COMPOSITION OF MATTER, CALLED METALINE," FOR JOURNALS. BEARINGS. &c.

Specification forming part of Letters Patent No. 101,864, dated April 12, 1870 antedated March 30, 1870.

To all whom it may concern: pletely mixed. The mass is then to be sub- Be it known that I, STUART GWYNN, of iected to severe pressure in a suitable mold, the city of New York, in the county of New to give it the required solidity. York and State of New York, have invented in journal-boxes made of or lined with this a new Composition of Matter, which I denomcomposition, shafts may be run at a highspeed inate Metaline No. 4, designed for the purwithout a lubricant.

pose of journal-boxes, journal-box linings, and WhileI intend to limit m self in this speciother similar articles having surfaces that are fication to brittle or unplastic pure metals, as intended to be subjected in use to friction. plasticity is defined in the specification de- The nature of my invention consists in comscribing my process for making metaline bining zinc and caoutchouc, or their equivaabove referred to, for the principal element of lents,npon the principles and in pursuance of said composition, whose condit ons need modi the method fully described and illustrated in fications to convert it into metaline, other the specification annexed to my application brittle or unplastic pure metals, as plasticity is for Letters Patent for a process for making defined in the specification describing my pr0-' metaline, filed in the Patent Oflice simulcess for making metaline above referred to, taneously herewith, and to which reference beside zinc, its equivalents for the purpose inis made, whereby -I produce a composition of tended may be employed, and other agents matter having such properties and conditions besides caoutchouc, its equivalents for the purthat so little friction will be caused, and s0 pose intended, may be used. So also the rela little heat developed in the practical use of two proportions of the zinc and caoutchouc, or the above-named articles made ofit, in machintheir equivalents above stated, may be varied cry and elsewhere in the arts, that the neceswithin the limits of the process hereinbefore sity-for the application of oil or any other referred to, without departing from the spirit lubricant to their surfaces is entirely obviated. of my invention.

To make this composition of matter, take of I claim as my in vention zinc ninety-five-parts, and of fused caoutchouc The manufacture or preparation of a comflve parts, by weight. Thezinc is reduced to a position of matters, which I denominate Metfine powder, by abrasion, precipitation, or by aline No. 4, when the same possesses the grinding when near its melting-point, which properties and is compounded of the ingredilatter is the mode I generally prefer. The cuts, or their equivalents, in the proportions, two are then to be intimately mixed together. by the process, and for the purpose set forth. First puttogether about equal parts, and grind STUART GWYN N them in a suitable mill or stirrer for some time Witnesses p until incorporated. Then add the rest of the J. P. FITCH,

zinc, a little at a time, until the wholeis com- HENRY N. MYG TT. 

